Transcription of Surface Metal Plating - FrontierMaterials.net
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Surface Metal Plating - FrontierMaterials.net
What is a Surface Finish?A Surface finishmay be defined as a coating located at the outermost layer of a PCB (which is dissolved into the solder paste upon reflow or wave soldering)(which is dissolved into the solder paste upon reflow or wave soldering)Two Main Types of CoatingsFinishSurface Metallic OrganicMetal PlatingFinishNote: (Base) Metal Plating is typically copper (in most cases). g()gypypp()But, in a few (like ENIG) the Nickel-phosphorous (5-12% P co-deposit) serves as the solderable use a Surface Finish?The Surface finish protects the PCB Surface Copper until it s AssembledHow to Select a Proper Surface Finish?
Electroless Plating (Only) • Process is nonelectrolytic. (No electrical current applied) • Mtli d dMetal ions are reduced bh ilith lti ltiby chemicals in the plating solutions.
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